MC68HC908LD64 Datasheet, PDF (217/362 Pages) Freescale Semiconductor, Inc – Microcontrollers

Universal Serial Bus Module (USB)
Embedded Device Function I/O Registers
DSTALL2 — Embedded Device Endpoint 2 Force Stall Bit
This read/write bit causes embedded device endpoint 2 to return a
STALL handshake when polled by either an IN or OUT token by the
USB host controller. Reset clears this bit.
1 = Send STALL handshake
0 = Default
DSTALL1 — Embedded Device Endpoint 1 Force Stall Bit
This read/write bit causes embedded device endpoint 1 to return a
STALL handshake when polled by either an IN or OUT token by the
USB host controller. Reset clears this bit.
1 = Send STALL handshake
0 = Default
14.7.7 USB Embedded Device Status Register (DSR)
Address: $004D
Bit 7
6
5
4
3
2
1
Bit 0
Read: DRSEQ DSETUP DTX1ST 0 RP0SIZ3 RP0SIZ2 RP0SIZ1 RP0SIZ0
Write:
DTX1STR
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
Figure 14-19. USB Embedded Device Status Register (DSR)
DRSEQ — Embedded Device Endpoint 0 Receive Sequence Bit
This read-only bit indicates the type of data packet last received for
embedded device endpoint 0 (DATA0 or DATA1).
1 = DATA1 token received in last embedded device endpoint 0
receive
0 = DATA0 token received in last embedded device endpoint 0
receive
DSETUP — Embedded Device SETUP Token Detect Bit
This read-only bit indicates that a valid SETUP token has been
received.
1 = Last token received for endpoint 0 was a SETUP token
0 = Last token received for endpoint 0 was not a SETUP token
MC68HC908LD64 — Rev. 3.0
Freescale Semiconductor
Universal Serial Bus Module (USB)
Data Sheet
217